Abstract

Abstract A novel thymine monomer of pyrrolidine-based peptide nucleic acid that contains tertiary amines in the main chain (pyrrolidine-based amino peptide nucleic acid = PAPNA) was synthesized. A mixed oligomer of two PAPNA(T) units and seven units of pyrrolidine-based oxypeptide nucleic acid (POPNA), was synthesized by a solid-phase method. The mixed oligomer was internalized into CHO cells more readily than the previous version of POPNA oligomers.

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